<template>
  
  <div>
    <!-- 面包屑导航栏 -->
    <el-breadcrumb>
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
        <!-- input框 -->
        <el-row :gutter="20">
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
            </el-col>
        </el-row>

        <!-- 用户列表 -->
        <el-table :data="userList" stripe :border="true">
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态">
                <template v-slot="scope">
                    <el-switch
                        v-model="scope.row.mg_state">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="180px">
                <template v-slot="scope">
                    <!-- 修改 -->
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                    <!-- 删除按钮 -->
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                    <!-- 分配角色 -->
                    <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                    </el-tooltip>
                    
                </template>
            </el-table-column>
        </el-table>

        <!-- 分页 -->
        <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 3, 4]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
        </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
    title="添加用户"
    :visible.sync="addDialogVisible"
    width="50%"
    @close="addDialogClosed"
    >
        <!-- 添加用户表单 -->
        <el-form ref="addFormRef" :model="addForm" label-width="70px" :rules="addFormRules">
            <el-form-item label="用户" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>

        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog
    title="修改用户"
    :visible.sync="editDialogVisible"
    width="50%"
    @close="editDialogClosed"
    >
        <el-form ref="editFormRef" :model="editForm" label-width="70px" :rules="editFormRules">
            <el-form-item label="用户" prop="username" >
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>

        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
    </el-dialog>

        <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
    data() {
        // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }

      cb(new Error('请输入合法的邮箱'))
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

      if (regMobile.test(value)) {
        return cb()
      }

      cb(new Error('请输入合法的手机号'))
    }
        return {
            queryInfo:{
                query:'',
                pagenum:1,
                pagesize:2
            },
            userList:[],
            total:0,
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible:false,

            //添加用户表单
            addForm:{
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            addFormRules:{
                username:[
                    { required: true, message: '请输入活动名称', trigger: 'blur' },
                    { min: 3, max: 6, message: '长度在 3 到 6 个字符', trigger: 'blur' }

                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ],
                email:[
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur'}
                ],
                mobile:[
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            editDialogVisible:false,
            editForm:{},
            editFormRules:{
                email:[
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur'}
                ],
                mobile:[
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            setRoleDialogVisible:false,
            userInfo:{},
            rolesList:[],
            selectedRoleId:''
        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
            const {data:res} =  await this.$http.get('users',{
                params:this.queryInfo
            })
            if(res.meta.status !==200) {
                return this.$message.error('获取用户列表失败')
            }
            this.userList = res.data.users
            this.total = res.data.total
        },
        // 监听 pagesize 改变的事件
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听 页码值 改变的事件
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
         // 监听修改用户信息对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        // 点击按钮添加用户
        addUser(){
            this.$refs.addFormRef.validate(async valid=>{
                if(!valid) return this.$message.error('输入有误')
                const{data:res} = await this.$http.post('users',this.addForm)
                if(res.meta.status!==201){
                    return this.$message.error(res.meta.msg)
                }
                this.$message.success('用户添加成功')
                this.addDialogVisible = false
                this.getUserList()
            })
        },
        // 修改用户信息按钮
        async showEditDialog(id){
            this.editDialogVisible = true
            const{data:res} = await this.$http.get('users/'+id)
            this.editForm = res.data
        },
        // 修改用户信息并提交
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid=>{
                if(!valid) return
                const{data:res} = await this.$http.put('users/'+this.editForm.id,
                {id:this.editForm.id,
                 email:this.editForm.email,
                 mobile:this.editForm.mobile
                })
                if(res.meta.status!==200) return this.$message.error('修改失败')
                this.editDialogVisible = false
                this.getUserList()
                this.$message.success('修改成功')
            })
        },
        // 点击删除按钮
        async removeUserById(id){
            const confirmResult = await this.$confirm(
            '此操作将永久删除该用户, 是否继续?', 
            '提示', 
            {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err=>err)

            // 如果用户点击了确定返回字符串 confirm
            // 如果用户点击了取消返回字符串 cancel
            if(confirmResult !== 'confirm'){
                return this.$message.info('已取消删除')
            }
            const {data:res} =  await this.$http.delete('users/' + id)
            if(res.meta.status!==200) return this.$message.error('删除失败')
            this.$message.success('删除成功')
            this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo) {
            this.userInfo = userInfo

            // 在展示对话框之前，获取所有角色的列表
            const { data: res } = await this.$http.get('roles')
            if (res.meta.status !== 200) {
                return this.$message.error('获取角色列表失败！')
            }

            this.rolesList = res.data

            this.setRoleDialogVisible = true
        },

        // 点击按钮，分配角色
        async saveRoleInfo() {
            if(!this.selectedRoleId) return this.$message.error('请选择修改内容')

            const {data:res} =  await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})
            if (res.meta.status !== 200) {
                return this.$message.error('更新角色失败！')
            }

            this.$message.success('更新角色成功！')
            this.getUserList()
            this.setRoleDialogVisible = false
        },

        // 监听分配角色对话框的关闭事件
        setRoleDialogClosed() {
            this.selectedRoleId = ''
            this.userInfo = {}
        }
    }
}
</script>

<style>

</style>